MECHANICAL CALCULATORS - 19TH CENTURY - THOMAS DE COLMAR, 7 VOLUMES

i. Francoeur, Louis-Benjamin (1773-1849). "Rapport…sur la machine à calculer de M. le Chevalier Thomas, de Colmar… no. 33, à Paris" [in:] Bulletin de la Société D'Encouragement pour L'Industrie Nationale, Vingt-unième année, No. CCXII, Février 1822. Paris: Imprimerie de Madame Huzard, 1822, 4to, green morocco backed boards, spine gilt, marbled endpapers, modern folding cloth box, (bought from Biblion, 1993), [T&W F95], rubbed  ii. [Anonymous]. Instruction pour se servir de L'Arithmomètre, machine a calculer inventée par M. Thomas. Paris: Blondeau, 1856, 8vo, later edition, yellow wrappers, morocco-backed folding box, [T&W T23], spotting, wrappers worn with some minor loss iii. Warren, Thomas T. P. Bruce. "On the application of the calculating machine of M. Thomas de Colmar to electrical computations" [in:] Journal of the Society of Telegraph Engineers, including original communications on telegraphy and electrical science, vol. 1, no. 2, 1872, pp.141-168. London: Society of Telegraph Engineers, 1872, 8vo, half morocco, spine gilt, [T&W W14; Origins of Cyberspace 406], some plates in the volume torn with some loss, rubbed iv. [Anonymous]. Instruction pour se servir de L'Arithmomètre machine a calculer inventée par M. Thomas (de Colmar). Paris: Felix Malteste, 1873. 8vo, later edition, folding plate, green wrappers, (bought from Roger Gaskell, 1996), [T&W T24], wrappers slightly soiled v. Reuleaux, Franz (1829-1905). Die sogenannte Thomas'sche Rechenmaschine. Leipzig: Arthur Felix, 1892. 8vo, 1 folding plate, blue wrappers, presentation inscription on upper wrapper, (bought from Palinurus, 1992), [T&W R76] vi. Payen, Louis Toussaint (b. 1839). Arithmomètre L. Payen. Machine à calculer. Paris: c. 1910. 8vo, green wrappers, [T&W C11], some gatherings loose, wrappers very worn, creased, tape at edges for reinforcement vii. Société d'encouragement pour l'industrie nationale. Numéro commémoratif du Centenaire de l'invention, par Thomas De Colmar, de la première machine à calculer industrielle. Paris: Siège de la Société, 1920. 4to, original green wrappers laid down on later binding, (bought from Alain Brieux, 2004), [not in T&W]

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